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Table 4 Multiple regression analysis of demographic characteristics and numberof chronic diseases on the physical component summary(PCS) and physical component summary (MCS) from the SF–36 survey

From: Health related quality of life in pregeriatric patients with chronic diseases at urban, public supported clinics

Independent Variables

Dependent Variables

 

PCS Estimate (95% of Confidence Interval)

P Value

MCS Estimate (95% of Confidence Interval)

P Value

Sex

    

   Women

Reference

 

Reference

 

   Men

-3.02 (-0.64 to -0.54)

0.01

-4.78 (7.80 to 1.76)

0.00

Age

    

   <60 yr

Reference

 

Reference

 

   >60 yr

1.08 (-1.36 to 3.52)

0.38

-0.89 (-3.99 to 2.20)

0.57

Ethnicity

    

   Caucasian

Reference

 

Reference

 

   African American

0.92 (-2.26 to 4.11)

0.57

-0.64 (-4.67 to 3.40)

0.76

   Hispanic

2.99 (-0.70 to 6.68)

0.11

-0.06 (-4.74 to -4.62)

0.98

Education

    

   Above High School

Reference

 

Reference

 

   Less High School

-1.08 (-2.65 to 4.80)

0.57

-2.84 (-1.88 to 7.57)

0.27

   High School

-0.09 (-3.39 to 3.21)

0.96

-2.37 (-1.81 to 6.55)

0.27

Income (Household)

    

   ≤$ 5,000

Reference

 

Reference

 

   $ 5,000–$ 10,00

-0.20 (-3.21 to 3.60)

0.91

-5.11 (0.79 to 9.43)

0.02

   >$ 10,000

-2.84 (-0.59 to 6.26)

0.11

-5.07 (0.72 to 9.41)

0.02

Employment

    

   Yes

Reference:

 

Reference:

 

   No

-5.66 (-8.39 to -2.93)

0.00

-4.23 (-7.69 to -0.76)

0.01

No. of chronic diseases

    

   1

Reference

 

Reference

 

   2

-3.04 (-6.53 to 0.46)

0.09

-1.14 (-5.57 to 3.29)

0.61

   3

-8.53 (-12.18 to -4.87)

0.00

-2.77 (-7.40 to -1.86)

0.24

   4

-9.44 (-13.01 to -5.80)

0.00

-8.49 (-13.09 to -3.88)

0.00

R2*

0.23

0.00

0.13

0.00

  1. * Square of correlation coefficient (R).